DTC P0171 "System Too Lean" - 2004-2006 Mitsubishi Lancer

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SUBJECT: DTC P0171 SYSTEM TOO LEAN	No: TSB-06-13-009
	DATE: April, 2006
	MODEL: 2004-06 Lancer 2.0L

PURPOSE

The MIL may come on and DTC P0171 “System Too Lean” may set in the PCM. This condition may be due to vacuum leakage around a fuel injector insulator. To eliminate this condition, install a new, improved O-ring (listed in the PARTS INFORMATION section of this bulletin) on all fuel injectors. When installing the injectors, it is critical that there is no air leakage between the fuel injector and the insulator.

AFFECTED VEHICLES

2004-2006 Lancer models equipped with 2.0L engine

PROCEDURE

no clearance between the insulator and the injector

PARTS INFORMATION

Use the Genuine Mitsubishi Part listed below:

WARRANTY INFORMATION

Fuel Injector O-Ring & Insulator Replacement
Nature Code: 16D	Cause Code: 450
Labor Operation No. 13311095	Time Allowance: 0.6 hr.
Warranty Coverage: Emissions warranty 8 years / 80,000 miles
Special Warranty Information: Normal warranty procedures apply.

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Bestseller No. 1

THIKPO Universal Fuel Injector Tester and Cleaner Tool Kit, DIY Cleaning Tool Kit, 8 Pulse Modes, 4 Wire Dual Channel for 2 Fuel Injectors, 8 Size Cleaning Adapters, 12V/5V Output Power

Upgraded Universal Fuel Injector Tester and Cleaner Tool Kit---Operates injectors individually to diagnose fuel delivery problems on petrol vehicles with electronic fuel injection, such as blockage, leakage, damage, and burnout of the injectors. The included 8-size cleaning adapters combined with the tester pulse mode can quickly clean the injectors
【Test for 2 Injectors Simultaneously & Ultra-long Power Cord】Come with two pairs of output terminals, allowing you to test for two injectors or for one injector at once. The tester power cord is up to 40inch and the test lead is up to 20 inches for convenient testing. The wires are made of superior silica gel, allowing the tester to work at high and low temperatures. （To make it perform better, it is recommended to work at normal temperatures.）
【8 Size Adapters Cleaning Tool & Universal Fit】Our cleaner small and large size adapters are compatible with most 12V EFI and GDI vehicle models' injectors. We also offer two additional specialized adapters for the BMW Audi, one is suitable for models such as V.W, Audi, etc. and another one with threaded hole is exclusively for BMW N series such as N14/N18/N20/N26/N53/N54/N55/N63/S63.
【8 Pulse Modes & LCD Display】The fuel injector tester kit is designed with 8 pulse modes, which are composed of 4 pulse signal output modes and 2 output voltage levels: Short/ Medium/ Long/ Continuous pulse modes + High/Low(12V/5V) power drive modes. This tester has a wide variety of pulse modes, providing a large testing space to accurately and quickly diagnose and repair petrol vehicle injectors' fuel delivery problems. The LCD displays the mode you are in.
【Polarity Reverse Connection Protection & Short Circuit Protection】Deigned with power input reverse connection protection and output short circuit protection function. In the case damaged or a short circuit of the pulse output terminal, the power indicator light of the fuel injector cleaner tool kit will flash to prompt you.

Bestseller No. 2

EM276SET Fuel Injector Tester & Adapter DIY Cleaning Tool Kit Set (Fuel Injector Tester + Adapter) Fuel System Cleaner Gasoline Engines

Supports Testing Of Individual Injectors: DIY Fuel Injector Cleaning Kit Operates injectors individually to diagnose fuel delivery problems on petrol vehicles with electronic fuel injection, such as identify stuck, leaking or burnt-out conditions
Important Warning Tips: There is a warning label on the back of the product. Such as Never smoke or have open flames near vehicle, don't short the battery's positive terminal and negative terminal. Wear face and eye protection while doing this. because if you lose the correct grip there is a possibility of cleaning fluid hitting your eyes or face. Works with engine off and pulse timer may be used with fuel pressure gauge
8 Pulse Modes & 4 Pulse Signal Output Modes: The fuel injector cleaner kit has large LED display, it is consisting of 4 pulse signal output modes(short/medium/long/continuous pulse). Also it designed with 8 pulse modes. Test Lead: 41. 5cm / 16. 3 inches. The long power cable and pulse output cable made of high-quality silicone, it can better withstand high/low temperatures
Work With Any Fuel Pressure Tester: The fuel injector cleaning kit can work with Any Fuel Pressure Tester, it can diagnose injector problems, you can use it to test each injector individually to help identifing stuck, leaking or burnt-out conditions. Please NOTE: Gasoline car only, NOT the diesel engine
Uses 12v Vehicle Battery For Power: This fuel injector cleaner kit powered by vehicle’s 12V battery. DON’T use NINE-VOLT batteries to power the injector tester -- DON'T do it. It requires a full 12 volts in order to fire the gummed-up injectors and get them completely clean

Bestseller No. 3

Fuel Injector Tester Cleaner Tool Kit 8 Pulse Modes Injector Tester 2 Fuel Injector Test Simultaneously DIY Cleaning Tools with 40in Power Cord,4 Injector Cleaner Adapters,Short Circuit Protection 12V

【Test 2 Injectors Simultaneously】Fuel injector cleaner tester can help you diagnose and clean injectors, easily identify common faults such as stuck, blocked, leaked or burnt-out conditions of the fuel injector. Compared with other fuel injector cleaner and tester with only one pair of pulse output teminals(black&red test lead), our fuel injector tester has 2 pulse output teminals(two pairs of test leads), which can test two fuel injectors at the same time for comparison.
【8 Pulse Modes & Mode Lock Feature & LCD Display】The fuel injector tester kit is designed with LCD display and 8 pulse modes, which composed of 4 pulse signal output modes and 2 output voltage levels: Short/ Medium/ Long/ Continuous pulse modes + High/Low(12V/5V) power drive modes. This fuel injector cleaning machine can help you to identify good and bad injectors when the engine is off. You can choose any mode as your needs. And its mode lock feature ensures test condition uniformity.
【4 Size Adapters & Wide Compatibility】Our injector cleaner is compatible for 12V injectors of almost all vehicle models, for both EFI and GDI injectors. It comes with a large and a small size universal adapters compatible for injectors of most models(except for Audi BMW), so we newly add 2 adapters to expand its compatibility: a medium size adapter for Audi, VW, etc. and another one with threaded hole is exclusively for BMW N series such as N14/N18/N20/N26/N53/N54/N55/N63/S63.
【40inch Power Cord & 20inch Test Lead】The length of power cord is up to 40inch/100cm and its test lead is 20 inches,which is more convenient for you to connect and use. The wires are made of superior silica gel, which has better high and low temperature resistance. Fuel injector cleaning kit is powered by 12V battery or an external DC 12V (recommended at least 1.5A) power adapter. It works with engine off and can work with any fuel pressure tester(NOTE: Gasoline car only, NOT the diesel engine).
【Polarity Reverse Connection Protection & Short Circuit Protection】This fuel injector cleaner and tester is deigned with power input reverse connection protection and output short circuit protection function. In the case of a damaged fuel injector or a short circuit of the pulse output terminal, the power indicator light of the fuel injector cleaner tool will flash to prompt you.

Bestseller No. 4

Universal Fuel Injector Tester Cleaner Tool Kit Automobile Fuel Injector Cleaner Kit, 8 Pulse Modes, 6 Size Cleaning Adapters, 12V/5V Output Power DIY Fuel Injector Tester Cleaner

【Upgraded Fuel Injector Tester Cleaner Tool Kit】The upgraded fuel injector tester and cleaner kit features high/low(12V/5V) power drive mode to support the test of high/low impedance fuel injectors and includes 8 switchable pulse modes, 4 test leads and 6 fuel injector adapters, and can test 2 fuel injectors simultaneously. It can help you more quickly diagnose and clean the fuel injectors, determining whether there are problems such as blockages, leaks, damages or burnouts.
【Test 2 Injectors Simultaneously & Extra Long Power Cord】The automobile fuel injector cleaner kit is equipped with 2 pairs of pulse output terminals, enabling the simultaneous testing two fuel injectors, improving the efficiency of testing and cleaning, saving a lot of time. The 18-inch test leads and 30-inch long power cords allow for testing in spacious areas and complex environments.
【8 Pulse Modes for Efficient Testing & Cleaning】The universal fuel injector tester cleaner is designed with 8 pulse modes, which are composed of 4 basic pulse modes (short/medium/long/continuous pulses) + High/Low(12V/5V) power drive. The high/low voltage driving modes can support the testing of fuel injectors with different impedances. The multiple pulse modes can simulate the complex working conditions of the engine, improving the accuracy of testing.
【6 Injector Adapters & Wide Applicability】Our DIY fuel injector tester comes with 6 different-sized injector nozzle adapters, which are compatible with most automotive fuel injectors driven by 12V/5V, including MPFI, SPFI, TBI, CFI, L-Jetronic, K-Jetronic, LPG injectors, FSI, GDI, motorcycle injectors, etc. The fuel injector cleaner machine also provides an adapter with M12 aperture size, which is compatible with BMW N series engines (such as: N14/N18/N20/N26/N53/N54/N55/N63/S63).
【Reverse Polarity Protection & Short Circuit Protection】The injector tester is designed with short-circuit protection and reverse polarity protection. When the positive and negative clamps are connected in reverse or there is an internal short circuit, the injector tester stop working to avoid damaging the fuel injector and the tester itself, thus ensuring safe and reliable testing.

Bestseller No. 5

Universal Fuel Injector Tester Cleaner Tool Kit, 6 Size Cleaning Adapters 8 Pulse Modes Injector Tester 12V/5V Output Power Drive, 4 Wire Dual Channel DIY Fuel Injector Cleaner Tools

【6 Size Adapters Cleaning Tool & Universal Fit】 - Our fuel injector tester cleaner kit are available in 6 sizes of cleaner adapters and are widely used for all types of injectors from 5V-12V, such as EFI and GDI injectors. These include 5 types of adapters with hole diameters of 9.8mm, 10.8mm, 11.8mm, 12mm, 13.5mm, and one type of adapter with threaded holes specifically for BMW N-series injectors, such as N14/N18/N20/N26/N53/N54/N55/N63/S63.
【8 Pulse Modes & 12V/5V Power Drive】 - Our fuel injector cleaner kit can select High/Low(12V/5V) power drive and 4 pulse signal output modes, making a total of 8 Pulse Modes: Short/ Medium/ Long/ Continuous pulse modes + High/Low(12V/5V) power drive modes. This fuel injector tester has a wide variety of pulse modes, providing a large testing space to accurately and quickly diagnose and repair petrol vehicle injectors' fuel delivery problems.
【4-Wire Dual Channel for 2 Injectors】 - The fuel injector tester with 4-Wire Dual Channel design. Compared with other injector tester tool, our injector tester has an additional pair of test leads, which can test 2 injectors at the same time.
【Power Supply & NOTES】 - Our testers are powered by a 12V battery or external DC 12V (1.5A minimum) power adapter and can be used with any fuel pressure tester. NOTE: Gasoline car only, NOT the diesel engine!! A cleaner (not included) and a 12V DC battery power supply (not included) are required. Please prepare these necessary tools in advance.
【Polarity Reverse Connection Protection & Short Circuit Protection】 - Our fuel injector tester have power input reverse connection protection and output short circuit protection. You don't have to worry about damaging the automobile fuel injector cleaner because of a small careless mistake.

Bestseller No. 6

Luney Fuel Injector Tester and Cleaner Tool Kit & 2 Size Adapters, 4 Pulse Modes DIY Cleaning Tool Kit with 40" Power Cord for Automotive Diesel Motorcycle

【What You Will Get? 】Components included in the fuel injector tester and cleaning tools kit: 1 CNBJ-20 motorcycle fuel injector cleaner machine; 2 injector adapters (different sizes); 1 black storage box with zipper; 1 Chinese and English instruction manual
【Working Principle and Function】 The fuel injector tester and cleaner kit can help you diagnose injector problems, you can test the injectors one by one to help confirm fuel delivery problems such as stalling, leaking, burned out or damaged, to find out the problem and solve the crisis in time to protect personal safety
【4 Pulse Modes and Clear Display】The diesel fuel injector tester kit has 4 pulse signal output modes, i.e. single pulse/short pulse/long pulse/continuous pulse 4 driving modes. Continuous mode can recognize the injector's good or bad condition when the engine is turned off, and the mode locking function achieves the consistency when testing the injector. Users can choose any mode according to their needs. At the same time with a clear display allows you to clearly see the mode, allowing you to more accurately and quickly detect the fuel delivery problems of automotive injectors and timely maintenance
【Power Supply Mode】The fuel injection systems cleaners tools kit is using the vehicle's 12V car battery as the power supply, this instrument can be used with any fuel pressure tester. Special Note: This fuel pressure tester kit is only applicable to gasoline vehicles, please do not use for oil extraction engine and except 12V voltage car battery, otherwise it will cause damage to this equipment
【Universal Adapter and Power Cord】The fuel system cleaner for gasoline engines comes with two sizes of adapters (one large and one small), which are compatible with most 12V EFI and GDI car injectors. The tester power cord is made of excellent quality silicone, high and low temperature resistance; the power cord is 40 inches long with a wide working range, very convenient for testing

SaleBestseller No. 7

CMTOOL Fuel Injector Tester and Cleaner Tool Kit, Upgraded 6 Cleaning Adapters & 8 Pulse Modes, DIY Tool, Car Fuel Injector Cleaner Kit, 5V/12V Output Voltage Level

【Upgrade 6 Sizes of Cleaning Adapters】The fuel injector tester kit contains 6 cleaning adapters of different sizes, suitable for 12V and below 12V injectors, such as EFI, GDI, FSI, MPFI, SPFI, TBI, CFI, L-JET, LPG, K-Jetronic, coil-type direct, motorcycle injectors, etc. This tester kit is the most powerful and adapter-rich injector tester kit on the market, which can help you accurately detect the performance of the injector, diagnose faults, and ensure the normal operation of the engine.
【8 Pulse Modes & LCD Display & Indicator Light】The fuel injector tester has 8 pulse modes, consisting of 4 pulse signal output modes and 2 output voltage levels: short/medium/long/continuous pulse mode + high/low (12V/5V) power drive mode. The LCD will clearly display the pulse mode you selected, and the two indicator lights will flash quickly to indicate the pulse output status.
【Test Two Injectors Simultaneously】This fuel injector cleaner kit has a special 4 pulse output terminals (two pairs of test leads) that can test two fuel injectors at the same time. The test lead length is 47 cm/18.5 inches and the power cord is 85 cm/33.5 inches, which improves the convenience and efficiency of testing. Both the test leads and the power cord are made of high-quality silicone, which has better high and low temperature resistance.
【Reverse Polarity Protection & Short Circuit Protection】When the battery clamp is incorrectly connected to the positive and negative poles of the power supply, the protection circuit inside the tester can prevent the current from flowing in the wrong direction, thereby effectively protecting the safety of the tester and the user. If the two ends of the output terminal are connected together or two red/black wires are used to connect the injector, the fuel injector cleaner kit will not operate.
【Power Supply and Precautions】The fuel injector tester cleaner kit is powered by a 12V vehicle battery or an external DC 12V(recommended at least 1.5A) power adapter. Note: (1) It can be used with any fuel pressure tester. (2) The package does not include a power supply or cleaning agent. (3) Only suitable for gasoline engines, not for diesel engines.

Bestseller No. 8

Fuel Injector Cleaner Tester Kit Ultrasonic Injector Cleaner Machine 9 Test Modes Fuel Injector Tester Cleaner 4 Cylinder Fuel System Injection Cleaning Tool Kit for 5V & 12V Motorcycle Car Injectors

【Powerful Fuel Injector Cleaning Machine】Our fuel injector cleaner adopts powerful ultrasonic cleaning technology to more thoroughly remove stubborn carbon deposits on the injector. The fuel injector cleaner kit supports injectors surface cleaning and internal cleaning (Connect the pulse signal line to turn on the injector internal switch to achieve better cleaning effect), it also supports reverse cleaning and on-vehicle non-disassembly cleaning.
【Intelligent Fuel Injector Tester】Our fuel injector tester uses microcomputer oil pressure closed-loop control detection technology to simulate various working conditions of the engine to detect the injector's atomization, dripping, clogging, injection angle status, and the injection volume and uniformity of each injector at different speeds.
【Multi-function Fuel Injector Tester】Our fuel injector tester can perform multiple fuel injector tests: 1.Uniformity Test:Test the uniformity of the injection amount of each injector. 2.Atomization Observation:Use the background light to observe the spray atomization of the injector comprehensively and carefully. 3.Sealing Test:Test the sealing and dripping of fuel injector under high pressure.4. Fuel Injection Volume Test: Test the injection volume of the injector under set working conditions.
【9 Test Modes & Adjustable Test Parameters】fuel injector tester and cleaner adopts electronic pressure regulation control technology to provide stable oil pressure. You can adjust the test pressure, test time, and pulse width at will within the allowed range. The fuel injector tester cleaner provide 9 test modes: idle/medium/high speed/acceleration/variable speed test, leak test, idle/medium/high speed injection volume test.
【LCD Display & 4 Test Cylinders with Backlight】The injector cleaner machine is equipped with four 140ml test cylinders to support testing 4 injectors at the same time, and the liquid level is displayed intuitively. You can observe various working conditions clearly through the bright backlight. Equipped with an 800ml ultrasonic cleaning tank to support the simultaneous cleaning of multiple injectors. The test fluid and cleaning fluid can also be recycled through the liquid drain valve.

Bestseller No. 9

PACLVIO 4Pcs Fuel Injector Cleaner Kit, Universal Fuel Injector Flush Cleaner Adapter DIY Cleaning Tool Kit with Test Lead, for Car Fuel Injector Tester Fuel Pump Pressure Test

[High-quality materials] : This fuel injector cleaner is made of high-quality materials and has a long service life. The wire is made of high quality silicone resin with high toughness and better resistance to high and low temperatures. Crocodiles have large opening range and strong bite force. Joint with high hardness corrosion resistant plastic, polygonal convex groove design, enhance friction and anti-slip.
[Main function] : As an adapter for DIY cleaning injector nozzle, the injector is removed from the engine and can be cleaned separately. You can use it to save expensive nozzles when the injector is clogged. Fast, clean and convenient, will not block the nozzle, you can clearly see the shape of the nozzle atomization, to see whether it is blocked or leaking oil.
[Working principle] : The flush cleaner adapter of the injector is connected to the 12V power supply through this cable. After the current is switched on, the solenoid valve in the nozzle opens. At the same time, the cleaning liquid is washed through the white tube, and then cleaned through the sampler.
[Scope] : This DIY fuel injector cleaning adapter kit makes it easy to clean most car and motorcycle fuel injectors. General is suitable for any 12-24V car, motorcycle, electric car, ATV, yacht, etc. It helps extend the life of your fuel injectors and is a must for home mechanics.
[Protection design] : The fuel injector tester adopts a certain protection design, you do not have to worry about the safety problems caused by excess voltage or reverse voltage, when the injector is damaged or short circuit, the injector voltage indicator light will flash, after the power, when the injector begins to work, the liquid pressure in the cleaning liquid bottle makes the cleaning liquid spray out through the pipe, you can clean the carbon deposit in the injector.

Bestseller No. 10

DPTOOL Fuel Injector Noid Light Test Kit Noid Lites IAC Tester Compatible with GM PFI/TBI/SCPI/Multec2 Replacement for Ford TBI Compatible with Bosch2/PFI with Extension

Fuel Injection Troubleshooting: This kit provides a simple, easy way to tell if your injectors are receiving a signal from the ECU/PCM/PMU/AARP/NATO/NASA to spray.Plug these into the connectors for your injectors, idle air control, etc., to rule out any electrical issues, which will save you time
Simple Way To Check Injector Pulse: This kit takes all the guesswork out of diagnosing performance issues, the Noid lites confirm the injectors are getting the signal to open and close, easy to use, crank the engine and test for a signal, noid light flashes means injector pulse normal
Come With IAC Tester and Extension: It has lights that cover just about everything out there. The IAC testers are a great addition. and the extension is amazing. It's extremely easy to hook this all up, sit in the drivers seat and watch the end of the extension while cranking the engine over
Package Include: this kit include 8pc noid light: compatible with GM PFI, compatible with GM TBI, compatible with GM SCPI, compatible with GM Multec2, compatible with FORD TBI, compatible with Geo TBI, compatible with BOSH PFI, with IAC Tester and Extension
Wide Applicable Vehicle: comes with all sorts of different terminal configurations to match a wide variety of plugs out there, so work with most vehicle you will encounter